EP0511891B1 - Connector for the quick coupling of a tube - Google Patents
Connector for the quick coupling of a tube Download PDFInfo
- Publication number
- EP0511891B1 EP0511891B1 EP92401072A EP92401072A EP0511891B1 EP 0511891 B1 EP0511891 B1 EP 0511891B1 EP 92401072 A EP92401072 A EP 92401072A EP 92401072 A EP92401072 A EP 92401072A EP 0511891 B1 EP0511891 B1 EP 0511891B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- radial
- connection element
- ring
- annular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
- F16L33/22—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with means not mentioned in the preceding groups for gripping the hose between inner and outer parts
- F16L33/227—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with means not mentioned in the preceding groups for gripping the hose between inner and outer parts the hose being introduced into or onto the connecting member and automatically locked
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L37/00—Couplings of the quick-acting type
- F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
- F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
- F16L37/088—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of a split elastic ring
- F16L37/0885—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of a split elastic ring with access to the split elastic ring from a radial or tangential opening in the coupling
Definitions
- connection element between a flexible hose, for example rubber, and a tube made of rigid material, such as metal, or semi-rigid, such as a plastic material.
- a connection element consists of a set of two coaxial sockets, internal and external, defining between them an annular space comprising a closure member at one of its ends.
- This member is itself linked to a substantially cylindrical sleeve whose free end defines the entry of the element, while said sockets are capable of enclosing the end of a pipe.
- an O-ring seal is located in a sort of housing provided on the inner face of the internal sleeve.
- means are provided on the sleeve of the element to ensure the axial immobilization of the tube by cooperating with a radial shoulder of the latter, placed at an appropriate distance from its free end.
- connection element makes its manufacture particularly economical, since it can be produced by means of suitably stamped thin metal sheets, the fixing of the various members being generally ensured by simple crimps.
- the tube to be fitted into the connection element has a small diameter
- a quick connection element in which the locking means provided on said element include a split ring, elastically deformable in the radial direction.
- a split ring is disposed in an annular housing whose radial faces, internal and external, constitute axial stops for said ring, thus limiting its possibilities of axial displacement.
- the split ring After introduction of the tube into the connection element, the split ring constitutes a stop for the shoulder of the tube and thus ensures the axial immobilization of the latter.
- connection element described by patent EP-A-440,564. They indeed require a solid part in which is formed, by machining, the annular housing of the split ring.
- connection element capable of being manufactured according to the advantageous technique set out in patent EP-A-440,564 while allowing the fitting of a tube capable of being immobilized axially by means complementary to the type of those described by documents DE-A-2,948,560 or US-A-4,460,534.
- connection element according to the invention then comprises the provisions appearing in the characterizing part of claim 1.
- connection element requires only simple and inexpensive operations while leading to light embodiments.
- connection element designated by the general reference 1 , mounted at the end of the flexible pipe 2 according to the technique set out in document EP-A- 440,564.
- the internal sleeve 1 a of the connection element receives, in an annular housing 3 , at least one O-ring 4 .
- An annular radial wall 5 is fixed both to the internal sleeve 1 a and to the external sleeve 1 b and to the sleeve 6 by means of suitable crimps which have been described in the aforementioned document.
- connection element is intended, under conditions which will be specified, to allow rapid connection of a tube 7 , itself capable of being made of various materials, for example a rigid material, such as metal, or semi-rigid such as plastic.
- connection element 1 has, from its inlet end 6 a for the tube 7 , a bore whose diameter is substantially equal to the outside diameter of the tube 7 , at least over a substantial portion of its length. . As seen in Figure 1, the bore extends from the inlet end 6 to the inner sleeve 1a.
- the socket 10 is constituted by a solid piece, attached to the internal socket 1 a of the connection element. It has a cylindrical portion 10 a whose internal diameter is substantially equal to the diameter of the tube 7 .
- the sleeve 10 On the side of the inlet orifice 6 a , the sleeve 10 however has a flared frustoconical portion 10 b , the end 10 c of which constitutes the internal radial face of the annular housing 8 . The latter is also delimited by the cylindrical sleeve 6 , the shoulder 6 b of which constitutes the external radial face of the housing 8 .
- the split ring 9 which, as can be seen in FIG. 1, can be constituted by a ring of wire made of "spring steel".
- the diameter of the ring 9 is at most equal and preferably slightly less than the diameter of the tube 7 .
- the two edges of the slot provided in the ring are each provided with a radial tab 9 a projecting outside the housing 8 through an opening 6 c formed in the wall of the sleeve 6 .
- the ring 9 has two ribs 9 d projecting radially outward from the ring. While leaving the possibility of the ring to expand radially in its housing 8 , these ribs facilitate centering for reasons which will appear later.
- the tube 7 has, in known manner, an annular ramp 7 a , located at an appropriate distance from its end 7 b , in practice substantially less than the length of the bore of the connection element between its inlet 6 a and l end 1 c of the inner sleeve 1 a .
- the side opposite to the end 7b, the ramp 7a constitutes a radial shoulder 7c on the outer tube wall.
- the ramp 7 a which forms a frustoconical portion of the tube, can be obtained, as shown, by a suitable deformation of the wall of the tube 7 at the time of its manufacture or, on the contrary, be constituted by an added element and fixed to the tube, for example by gluing or any other similar means.
- the tube 7 has a slight bulge 7 d , located beyond the ramp 7 a , this bulge is preferably provided in the case where the tube 7 has a relatively small diameter.
- the maximum diameter of the bulge 7 b is substantially equal to the maximum diameter of the ramp 7 a .
- connection of the tube 7 in the element is carried out as follows. It suffices to fit the end 7 b of the tube and the cylindrical part which follows it into the inlet 6 a of the element.
- the tube first enters the bore portion formed by the sleeve 6 , then crosses the split ring 9 , causing, if necessary, a slight radial extension thereof.
- the tube then crushes the joint (s) 4 and finally reaches the end zone of the internal sleeve 1 a .
- the length of the cylindrical part of the tube along its end 7b does not need to be defined precisely provided that this end is not likely to exceed or even reach l end 1 c of the inner sleeve 1 a .
- the ramp 7 has reached the ring 9 and causes it to expand radially in the housing 8 .
- the shoulder 7 c has itself exceeded the ring 9 , the latter retracts elastically to form an axial stop for the shoulder 7 c .
- the ring 9 being immobilized between the radial faces 6 b and 10 c of the housing 8, the tube 7 is itself axially fixed in connection element 1 .
- the frustoconical portion 10b of the sleeve 10 allows, after axial locking of the tube, to receive the ramp 7a and possibly constitutes an axial stop for the tube, in the direction of the fitting.
- connection element If one wishes to dismantle the connection and extract the tube 7 from its element, it suffices, using a tool such as a screwdriver, to spread the radial lugs 9 a from the ring 9 to cause its expansion radial. As soon as the inner diameter of the ring is greater than that of the shoulder 7 c , the tube can easily be extracted from the connection element.
- the ring 19 is constituted by a thin sheet, of frustoconical shape, preferably corresponding to that of the ramp 7 in the tube.
- the diameter of the small base 19b is, in the free state of the ring, at most equal and preferably slightly less than that of the tube 7 .
- the diameter of the large base 19 c is at least equal to the diameter of the tube 7 and this large base is located, in the housing 8 , on the side of the inlet 6 a of the element of connection.
- ribs 19 d stamped in the frustoconical wall of the ring. These ribs, of substantially cylindrical shape, radially project on the outer wall of the ring, significantly on the side of the small base 19b .
- the axial length of the ring 19 corresponds to that of the housing 8 so that only the scalloped ends of the radial lugs 19 a pass through the opening 6 c and protrude outside the sleeve 6 .
- connection element 21 comprises the internal sockets 21 a and external 21 b assembled by crimping, on the one hand, to the radial wall 25 closing the housing 23 of the seals 24 , on the other hand, to the cylindrical sleeve 26 , the end 26 a , constitutes the entrance to the bore of the element.
- the sleeve 30 is here independent of the wall 25 . It is reduced in fact to a thin sleeve, comprising a cylindrical portion 30 a and a frustoconical portion 30 b . The latter is extended, beyond its end 30 c , by a plurality of radially flexible tabs 30 d .
- the split ring 29 is itself disposed around the legs 30 d which it encloses and, as can be seen in FIGS. 5 and 6, has longitudinal ribs 29 d intended to facilitate its centering in the housing 28 as well as we have already indicated it above.
- the tabs 30 d extend longitudinally to the vicinity of the inlet 26 a of the connection element.
- the slots formed between two contiguous legs preferably extend towards the inside of the element, at least over part of the frustoconical portion 30 b , possibly as far as the vicinity of the cylindrical portion 30 a of the socket 30 .
- the legs 40 d are substantially helical as are the slots which separate two adjoining legs. Again, it will be preferred that the slots extend over at least a portion of the frustoconical portion 40 of the sleeve 40.
- the ramp 27 a of the tube After the ramp 27 a of the tube has reached the inlet 26 a , it spreads the legs 30 d radially against the clamping force exerted on them by the split ring 29 .
- the shoulder 27 c of the tube has exceeded the end 30 c of the frustoconical portion 30 b of the sleeve, the tabs 30 d come back into contact with the tube and the ring 29 tightens, thus constituting the axial immobilization stop of the tube.
- connection element is nevertheless reusable. In some cases it is preferable to separate the socket 30 from the tube 27 and replace the socket inside the connection element in the position shown in FIG. 4. The tube can then be again locked in the connection element.
- connection element In other cases, it is possible to introduce, directly into the connection element, the tube 27 on which the sleeve 30 will have remained mounted, the ring 29 then allowing, by its radial expansion, the passage of the assembly.
Abstract
Description
On connaît déjà par le brevet EP-A-410.842, qui présente les caracteristiques du préambule de la revendication 1, un élément de connexion rapide entre un tuyau souple, par exemple en caoutchouc, et un tube en matériau rigide, tel que du métal, ou semi-rigide, tel qu'une matière plastique. Un tel élément de connexion est constitué par un ensemble de deux douilles coaxiales, interne et externe, définissant entre elles un espace annulaire comportant un organe de fermeture à l'une de ses extrémités. Cet organe est lui-même lié à un manchon sensiblement cylindrique dont l'extrémité libre définit l'entrée de l'élément, cependant que lesdites douilles sont susceptibles d'enserrer l'extrémité d'un tuyau.Already known from patent EP-A-410 842, which has the characteristics of the preamble of claim 1, a fast connection element between a flexible hose, for example rubber, and a tube made of rigid material, such as metal, or semi-rigid, such as a plastic material. Such a connection element consists of a set of two coaxial sockets, internal and external, defining between them an annular space comprising a closure member at one of its ends. This member is itself linked to a substantially cylindrical sleeve whose free end defines the entry of the element, while said sockets are capable of enclosing the end of a pipe.
Avant l'emmanchement du tube dans l'entrée de l'élément, un joint torique d'étanchéité est situé dans une sorte de logement prévu sur la face intérieure de la douille interne.Before the fitting of the tube into the entry of the element, an O-ring seal is located in a sort of housing provided on the inner face of the internal sleeve.
D'autre part, des moyens sont prévus sur le manchon de l'élément pour assurer l'immobilisation axiale du tube en coopérant avec un épaulement radial de ce dernier, placé à une distance appropriée de son extrémité libre.On the other hand, means are provided on the sleeve of the element to ensure the axial immobilization of the tube by cooperating with a radial shoulder of the latter, placed at an appropriate distance from its free end.
On connaît également par le brevet EP-A-440.564 qui est état de la technique selon l'Article 54(3) CBE, un élément de connexion rapide du genre en question. Il existe cependant, dans ce cas, un véritable logement du joint d'étanchéité formé dans la douille interne et ce logement est fermé, du côté de l'entrée de l'élément de connexion, par une paroi radiale annulaire distincte de la douille interne et fixée à celle-ci.Also known from patent EP-A-440,564 which is state of the art according to Article 54 (3) EPC, a quick connection element of the kind in question. There is however, in this case, a real housing for the seal formed in the internal bushing and this housing is closed, on the entry side of the connection element, by an annular radial wall separate from the internal bushing. and attached to it.
La structure d'un tel élément de connexion rend sa fabrication particulièrement économique, puisqu'il peut être réalisé au moyen de tôles métalliques minces convenablement embouties, la fixation des différents organes étant généralement assurée par de simples sertissages.The structure of such a connection element makes its manufacture particularly economical, since it can be produced by means of suitably stamped thin metal sheets, the fixing of the various members being generally ensured by simple crimps.
Lorsque le tube à emmancher dans l'élément de connexion présente un petit diamètre il est souvent avantageux de conformer la zone à emmancher de façon qu'elle comporte successivement, depuis l'extrémité du tube, d'une part, une portion cylindrique destinée à venir en contact avec le joint d'étanchéité de l'élément de connexion, d'autre part, une rampe annulaire se terminant par un épaulement radial susceptible de constituer une butée coopérant avec les moyens de verrouillage prévus sur l'élément de connexion.When the tube to be fitted into the connection element has a small diameter, it is often advantageous to shape the area to be fitted so that it successively comprises, from the end of the tube, on the one hand, a cylindrical portion intended to come into contact with the seal of the connection element, otherwise hand, an annular ramp ending in a radial shoulder capable of constituting a stop cooperating with the locking means provided on the connection element.
C'est ainsi que l'on connaît déjà, notamment par la demande publiée DE-A-2.948.560 ou par le brevet US-A-4.460.534 un élément de connexion rapide dans lequel les moyens de verrouillage prévus sur ledit élément comprennent une bague fendue, élastiquement déformable dans le sens radial. Une telle bague est disposée dans un logement annulaire dont les faces radiales, interne et externe, constituent des butées axiales pour ladite bague, limitant ainsi ses possibilités de déplacement axial. Après introduction du tube dans l'élément de connexion, la bague fendue constitue une butée pour l'épaulement du tube et assure ainsi l'immobilisation axiale de ce dernier.This is already known, in particular from published application DE-A-2,948,560 or from US-A-4,460,534, a quick connection element in which the locking means provided on said element include a split ring, elastically deformable in the radial direction. Such a ring is disposed in an annular housing whose radial faces, internal and external, constitute axial stops for said ring, thus limiting its possibilities of axial displacement. After introduction of the tube into the connection element, the split ring constitutes a stop for the shoulder of the tube and thus ensures the axial immobilization of the latter.
Toutefois, les réalisations proposées par les deux documents précités ne sont pas directement applicables à la technique de fabrication de l'élément de connexion décrit par le brevet EP-A-440.564. Elles exigent en effet une pièce massive dans laquelle est ménagé, par usinage, le logement annulaire de la bague fendue.However, the embodiments proposed by the two aforementioned documents are not directly applicable to the technique of manufacturing the connection element described by patent EP-A-440,564. They indeed require a solid part in which is formed, by machining, the annular housing of the split ring.
L'invention a donc pour objet un élément de connexion susceptible d'être fabriqué selon la technique avantageuse exposée dans le brevet EP-A-440.564 tout en permettant l'emmanchement d'un tube susceptible d'être immobilisé axialement par des moyens complémentaires du type de ceux décrits par les documents DE-A-2.948.560 ou US-A-4.460.534.The subject of the invention is therefore a connection element capable of being manufactured according to the advantageous technique set out in patent EP-A-440,564 while allowing the fitting of a tube capable of being immobilized axially by means complementary to the type of those described by documents DE-A-2,948,560 or US-A-4,460,534.
L'élément de connexion selon l'invention comporte alors les dispositions figurant dans la partie caractérisante de la revendication 1.The connection element according to the invention then comprises the provisions appearing in the characterizing part of claim 1.
Grâce à ces dispositions, la fabrication d'un élément de connexion ne nécessite que des opérations simples et peu onéreuses tout en conduisant à des réalisations légères.Thanks to these provisions, the manufacture of a connection element requires only simple and inexpensive operations while leading to light embodiments.
L'invention sera mieux comprise et diverses caractéristiques secondaires ainsi que ses avantages apparaîtront au cours de la description qui va suivre d'exemples de réalisation en référence aux dessins annexés dans lesquels :
- la figure 1 est une vue en coupe axiale d'un élément de connexion selon l'invention, après raccordement du tube qu'il est destiné à recevoir
- La figure 2 est une coupe suivant II-II de la figure 1
- La figure 3 est une vue en perspective d'une variante avantageuse de la bague fendue, susceptible d'être montée sur l'élément de connexion selon la figure 1
- La figure 4 est une vue en coupe d'une variante de réalisation de l'élément de connexion représenté sur la figure 1
- La figure 5 est une vue en perspective de la bague fendue utilisée sur l'élément de connexion selon la figure 4
- La figure 6 est une coupe selon VI-VI de la figure 4
- La figure 7 est une vue analogue à la figure 6 dans le cas d'une variante de réalisation de la douille
- La figure 8 est une vue partielle suivant la flèche F de la figure 7
- Figure 1 is an axial sectional view of a connection element according to the invention, after connection of the tube which it is intended to receive
- Figure 2 is a section along II-II of Figure 1
- Figure 3 is a perspective view of an advantageous variant of the split ring, capable of being mounted on the connection element according to Figure 1
- Figure 4 is a sectional view of an alternative embodiment of the connection element shown in Figure 1
- Figure 5 is a perspective view of the split ring used on the connection element according to Figure 4
- Figure 6 is a section along VI-VI of Figure 4
- Figure 7 is a view similar to Figure 6 in the case of an alternative embodiment of the sleeve
- Figure 8 is a partial view along arrow F of Figure 7
Si l'on se reporte tout d'abord aux figures 1 et 2, on voit un élément de connexion, désigné par la référence générale 1 , monté à l'extrémité du tuyau souple 2 selon la technique exposée dans le document EP-A-440.564.If we refer first to Figures 1 and 2, we see a connection element, designated by the general reference 1 , mounted at the end of the
Dans l'exemple représenté, la douille interne 1a de l'élément de connexion reçoit, dans un logement annulaire 3 , au moins un joint torique 4 . Une paroi radiale annulaire 5 est fixée aussi bien à la douille interne 1a qu'à la douille externe 1b et au manchon 6 au moyen de sertissages convenables qui ont été décrits dans le document précité.In the example shown, the internal sleeve 1 a of the connection element receives, in an
L'élément de connexion est destiné, dans des conditions que l'on va préciser, à permettre le raccordement rapide d'un tube 7 , lui-même susceptible d'être réalisé en matériaux divers, par exemple en un matériau rigide, tel que du métal, ou semi-rigide tel qu'une matière plastique.The connection element is intended, under conditions which will be specified, to allow rapid connection of a
Bien évidemment, l'élément de connexion 1 comporte, à partir de son extrémité d'entrée 6a pour le tube 7 , un alésage dont le diamètre est sensiblement égal au diamètre extérieur du tube 7 , au moins sur une portion notable de sa longueur. Comme on le voit sur la figure 1, l'alésage s'étend depuis l'extrémité d'entrée 6a jusqu'à la douille interne 1a .Obviously, the connection element 1 has, from its inlet end 6 a for the
A partir de l'extrémité d'entrée 6a on trouve successivement, un logement annulaire 8 , dans lequel une bague fendue 9 est immobilisée axialement, d'autre part, une douille 10 dont l'extrémité axiale la plus éloignée de l'entrée 6a constitue la paroi radiale 5 mentionnée plus haut. Ces éléments constituent les moyens d'immobilisation axiale du tube 7 et ils vont maintenant être décrits de façon détaillée.From the inlet end 6 a there is successively an
Dans l'exemple représenté, la douille 10 est constituée par une pièce massive, rapportée sur la douille interne 1a de l'élément de connexion. Elle présente une portion cylindrique 10a dont le diamètre intérieur est sensiblement égal au diamètre du tube 7 . Du côté de l'orifice d'entrée 6a , la douille 10 comporte cependant une portion tronconqiue évasée 10b dont l'extrémité 10c constitue la face radiale interne du logement annulaire 8 . Ce dernier est d'autre part délimité par le manchon cylindrique 6 dont l'épaulement 6b constitue la face radiale externe du logement 8 .In the example shown, the
Entre les deux faces radiales 10c et 6b du logement 8 se trouve la bague fendue 9 , qui comme on le voit sur la figure 1, peut être constituée par une anneau de fil en "acier à ressort". A l'état libre, le diamètre de la bague 9 est au plus égal et de préférence légèrement inférieur au diamètre du tube 7 . Les deux bords de la fente prévue dans l'anneau sont pourvus chacun d'une patte radiale 9a faisant saillie à l'extérieur du logement 8 en traversant une ouverture 6c ménagée dans la paroi du manchon 6 . D'autre part, ainsi qu'on le voit bien sur la figure 2, la bague 9 comporte deux nervures 9d faisant radialement saillie vers l'extérieur de la bague. Tout en laissant à la bague la possiblité de se dilater radialement dans son logement 8 , ces nervures facilitent le centrage pour des raisons qui apparaîtront plus loin.Between the two
On décrira plus loin, en se reportant à la figure 3 une variante avantageuse de la bague fendue 9 .An advantageous variant of the
Le tube 7 présente, de façon connue, une rampe annulaire 7a , située à une distance appropriée de son extrémité 7b , en pratique sensiblement inférieure à la longueur de l'alésage de l'élément de connexion entre son entrée 6a et l'extrémité 1c de la douille interne 1a . Du côté opposé à l'extrémité 7b , la rampe 7a constitue un épaulement radial 7c sur la paroi extérieure du tube.The
La rampe 7a , qui forme une portion tronconique du tube, peut être obtenue, comme on l'a représenté, par une déformation convenable de la paroi du tube 7 au moment de sa fabrication ou, au contraire, être constituée par un élément rapporté et fixé au tube, par exemple par collage ou tout autre moyen analogue.The
Ainsi qu'on le voit sur la figure 1, le tube 7 comporte un léger renflement 7d , situé au-delà de la rampe 7a , ce renflement étant de préférence prévu dans le cas où le tube 7 présente un diamètre relativement faible. Le diamètre maximal du renflement 7b est sensiblement égal au diamètre maximal de la rampe 7a .As seen in Figure 1, the
Le raccordement du tube 7 dans l'élément s'effectue de la façon suivante. Il suffit d'emmancher l'extrémité 7b du tube et la partie cylindrique qui la suit dans l'entrée 6a de l'élément. Le tube pénètre d'abord dans la portion d'alésage constituée par le manchon 6 , puis traverse la bague fendue 9 en provoquant, si nécessaire, une légère extension radiale de celle-ci. Le tube écrase ensuite le ou les joints 4 et atteint enfin la zone terminale de la douille interne 1a . Ainsi qu'on l'a déjà indiqué, la longueur de la partie cylindrique du tube suivant son extrémité 7b n'a pas besoin d'être définie de façon précise pourvu que cette extrémité ne risque pas de dépasser ni même d'atteindre l'extrémité 1c de la douille interne 1a .The connection of the
En effet, dans la phase finale de l'emmanchement du tube 7 , la rampe 7a atteint la bague 9 et provoque sa dilatation radiale dans le logement 8 . Lorsque l'épaulement 7c a lui même dépassé la bague 9 , celle-ci se rétracte élastiquement pour constituer une butée axiale pour l'épaulement 7c . La bague 9 étant immobilisée entre les faces radiales 6b et 10c du logement 8 , le tube 7 est lui-même axialement fixé dans l'élément de connexion 1 . La portion tronconique 10b de la douille 10 permet, après verrouillage axial du tube, de recevoir la rampe 7a et constitue éventuellement une butée axiale pour le tube, dans le sens de l'emmanchement.In fact, in the final phase of fitting the
On soulignera enfin, que dans le cas où il existe, le renflement 7d du tube 7 améliore, si besoin est, le centrage du tube dans l'élément et, par conséquent, la tenue du raccordement vis-à-vis des vibrations auxquelles le tube 7 peut être soumis.Finally, it will be emphasized that, in the case where it exists, the
Si l'on désire démonter le raccordement et extraire le tube 7 de son élément, il suffit, à l'aide d'un outil tel qu'un tournevis, d'écarter les pattes radiales 9a de la bague 9 pour provoquer sa dilatation radiale. Dès que le diamètre intérieur de la bague est supérieur à celui de l'épaulement 7c , on peut facilement extraire le tube de l'élément de connexion.If one wishes to dismantle the connection and extract the
Si l'on se reporte maintenant à la figure 3, on voit une variante de la bague fendue décrite plus haut. Elle peut avantageusement remplacer cette dernière, pratiquement sans aucune modification de la structure et des dimensions du logement 8 . Les éléments déjà décrits porteront les mêmes références augmentées de 10.Referring now to Figure 3, we see a variant of the split ring described above. It can advantageously replace the latter, practically without any modification of the structure and dimensions of the
Dans cette variante le bague 19 est constituée par une tôle mince, de forme tronconique, correspondant de préférence à celle de la rampe 7a du tube. Le diamètre de la petite base 19b est, à l'état libre de la bague, au plus égal et de préférence légèrement inférieur à celui du tube 7 . En revanche, dans les mêmes conditions, le diamètre de la grande base 19c est au moins égal au diamètre du tube 7 et cette grande base est située, dans le logement 8 , du côté de l'entrée 6a de l'élément de connexion.In this variant the
Pour faciliter le centrage de la bague dans le logement 8 il est prévu une ou plusieurs nervures longitudinales 19d , embouties dans la paroi tronconique de la bague. Ces nervures, de forme sensiblement cylindrique, font radialement saillie sur la paroi extérieure de la bague, de façon importante du côté de la petite base 19b .To facilitate centering of the ring in the
De préférence, la longueur axiale de la bague 19 correspond à celle du logement 8 de sorte que seules les extrémités échancrées des pattes radiales 19a traversent l'ouverture 6c et font saillie à l'exérieur du manchon 6 .Preferably, the axial length of the
La mise en place et le démontage du tube 7 s'effectuent de la façon décrite plus haut, le verrouillage du tube étant assuré par l'appui de l'épaulement 7c du tube sur la petite base 19b de la bague 19 . A cet effet, il sera avantageux que le bord longitudinal 19e des nervures 19d soit légèrement en retrait par rapport au plan de la petite base 19b de la bague.The installation and disassembly of the
Si l'on se reporte enfin aux figures 4 à 6 on voit une variante de réalisation de l'élément de connexion selon l'invention. Les éléments déjà décrits en référence aux figures 1 et 2 portent les mêmes repères augmentés de 20.If we finally refer to Figures 4 to 6 we see an alternative embodiment of the connection element according to the invention. The elements already described with reference to FIGS. 1 and 2 bear the same references increased by 20.
L'élément de connexion 21 comprend les douilles interne 21a et externe 21b assemblées par sertissage, d'une part, à la paroi radiale 25 fermant le logement 23 des joints 24 , d'autre part, au manchon cylindrique 26 dont l'extrémité 26a , constitue l'entrée de l'alésage de l'élément.The
La douille 30 est ici indépendante de la paroi 25 . Elle se réduit en fait à un manchon mince, comportant une portion cylindrique 30a et une portion tronconique 30b . Cette dernière est prolongée, au-delà de son extrémité 30c , par une pluralité de pattes 30d radialement flexibles.The
La bague fendue 29 est elle-même disposée autour des pattes 30d qu'elle enserre et, comme on le voit bien sur les figures 5 et 6, comporte des nervures longitudinales 29d destinées à faciliter son centrage dans le logement 28 ainsi qu'on l'a déjà indiqué plus haut.The
Dans le cas de la réalisation visible sur les figures 5 et 6, les pattes 30d s'étendent longitudinalement jusqu'au voisinage de l'entrée 26a de l'élément de connexion. Les fentes ménagées entre deux pattes contigües s'étendent de préférence, vers l'intérieur de l'élément, au moins sur une partie de la portion tronconique 30b , éventuellement jusqu'au voisinage de la portion cylindrique 30a de la douille 30 .In the case of the embodiment visible in Figures 5 and 6, the
Dans le cas de la variante visible sur les figures 7 et 8 (les éléments des figures 4 à 6 déjà décrits portent les mêmes repères augmentés de 10) les pattes 40 d sont sensiblement hélicoïdales de même que les fentes qui séparent deux pattes contigües. Là encore, il sera préférable que ces fentes s'étendent sur au moins une partie de la portion tronconique 40 a de la douille 40 .In the case of the variant visible in Figures 7 and 8 (the elements of Figures 4 to 6 already described have the same references increased by 10) the
La mise en place du tube 27 s'effectue d'une façon tout à fait analogue à celle qui a été décrite plus haut.The establishment of the
L'extrémité 27 b du tube et la partie cylindrique qui la suit pénètrent dans l'alésage constitué par les pattes 30 d , la portion cylindrique 30 a de la douille 30 et la zone terminale de la douille interne 21 a .The end 27 b of the tube and the cylindrical part which follows it penetrate into the bore constituted by the
Après que la rampe 27 a du tube a atteint l'entrée 26 a , elle écarte radialement les pattes 30 d contre l'effort de serrage exercé sur elles par la bague fendue 29 . Lorsque l'épaulement 27 c du tube a dépassé l'extrémité 30 c de la portion tronconique 30 b de la douille, les pattes 30 d reviennnent au contact du tube et la bague 29 se resserre, constituant ainsi la butée d'immobilisation axiale du tube.After the
Pour le démontage, il convient encore, à l'aide d'un outil, d'écarter les pattes 29 a de la bague de telle sorte que son diamètre augmente suffisamment pour laisser passer non seulement l'épaulement 27 c et la rampe 27 a , mais aussi la douille 30 qui est entraînée par eux, au moment de l'extraction du tube.For disassembly, it is also advisable, using a tool, to separate the
L'élément de connexion est néanmoins réutilisable. Dans certains cas on préfèrera séparer la douille 30 du tube 27 et replacer la douille à l'intérieur de l'élément de connexion dans la position représentée sur la figure 4. Le tube peut alors être à nouveau verrouillé dans l'élément de connexion.The connection element is nevertheless reusable. In some cases it is preferable to separate the
Dans d'autres cas, on peut introduire, directement dans l'élément de connexion, le tube 27 sur lequel la douille 30 sera restée montée, la bague 29 permettant alors, par sa dilatation radiale, le passage de l'ensemble.In other cases, it is possible to introduce, directly into the connection element, the
Dans le cas où la douille indépendante 40 a la structure représentée sur les figures 7 et 8, le montage et le démontage s'effectuent de la façon qui vient d'être indiquée. Toutefois, on soulignera un avantage particulier de la forme de réalisation de cette douille.In the case where the
Il est en effet fréquent que la fabrication des tubes destinés à être emmanchés dans les éléments de connexion du type en question laisse subsister des irrégularités sur la surface extérieure du tube, par exemple, de petites nervures saillantes telles que celles désignées par le repère 37 d sur la figure 8. De telles aspérités risquent d'être préjudiciables à l'étanchéité du raccordement, car elles "blessent" les joints 24 , aussi bien au cours de l'emmanchement du tube qu'en raison des mouvements vibratoires auxquels le tube peut être soumis en service.It is indeed frequent that the manufacture of the tubes intended to be fitted into the connection elements of the type in question leaves irregularities on the external surface of the tube, for example, small projecting ribs such as those designated by the
Grâce à la présence, sur les pattes 40 d des arêtes 40 e venant en contact avec la surface extérieure du tube (elles sont laissées aussi "vives" que possible lors de la fabrication de la douille 40 ), les aspérités éventuelles du tube dans la région située entre son extrémité 37 b et la rampe 37 a sont éliminées par ébavurage au cours de la mise en place du tube. Ainsi la surface cylindrique qui vient en contact avec les joints est parfaitement lisse et l'étanchéité du raccordement s'en trouve améliorée.Thanks to the presence, on the
Claims (3)
- Connection element constituted by an assembly of two bushes (1a-1b; 21a-21b), an inner bush and an outer bush, defining between them an annular space closed at one of its ends, which end is joined to a substantially cylindrical sleeve (6-26) of which the free end defines the inlet (6a-26a) of the element, said bushes being adapted to grip the end of a supple hosepipe, while a housing (3, 23) comprising an O-ring (4, 24) is provided on the inner face of the inner bush (1a, 21a) and while means provided on the sleeve of the connection element are adapted to ensure the axial immobilization of a rigid or semi-rigid tube, by cooperating with a radial shoulder of the tube situated on the end of an annular ramp of the tube, which ramp is placed at a suitable distance from the free end of the tube, characterized in that said immobilization means comprise a ring (9, 29), axially split and elastically deformable in radial direction, which ring is disposed in an annular housing (8, 28) of the connection element (1, 21) and constitutes a radial stop for the shoulder of the tube, once this has been introduced into the connection element, and in that the radial face of said annular housing (8, 28) most remote from the inlet (6a, 26a) of the element, is constituted by a radial portion (10c, 30c) of a bush (10, 30), which is separate from the connection element and fixed thereon, said bush (10, 30) having, on the one hand, a cylindrical portion (10a, 30a) of which the radial end, which is most remote from the inlet of said element, forms an annular radial wall (5) or is in abutment against an annular radial wall (25), separate from the inner bush and fixed thereto, said radial wall closing the housing which comprises the O-ring, at its end situated on the side of the inlet of the element, and on the other hand, a truncated portion (10b, 30b) which is flared with respect to the cylindrical portion, and against which an annular ramp (7a, 27a) of the tube can abut.
- Connection element according to claim 1, characterized in that the radial portion (30c) of the bush (30) constituting a radial face of the housing (28), is extended beyond the truncated portion (30b) towards the inlet (26a) of the element, by a plurality of radially flexible longitudinal lugs (30d), which are tightened by the split ring (29).
- Connection element according to claim 2, characterized in that the flexible lugs (40d) are inclined with respect to the axis of the element and in that one at least of their edges presents a sharp edge (40e) capable of coming into contact with the outer surface of the tube.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9105267 | 1991-04-29 | ||
FR9105267 | 1991-04-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0511891A1 EP0511891A1 (en) | 1992-11-04 |
EP0511891B1 true EP0511891B1 (en) | 1995-03-15 |
Family
ID=9412363
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92401072A Expired - Lifetime EP0511891B1 (en) | 1991-04-29 | 1992-04-16 | Connector for the quick coupling of a tube |
Country Status (11)
Country | Link |
---|---|
US (1) | US5273323A (en) |
EP (1) | EP0511891B1 (en) |
JP (1) | JP2685386B2 (en) |
AT (1) | ATE119981T1 (en) |
CZ (1) | CZ280943B6 (en) |
DE (1) | DE69201673T2 (en) |
DK (1) | DK0511891T3 (en) |
ES (1) | ES2071450T3 (en) |
HU (1) | HU211103B (en) |
PL (1) | PL167172B1 (en) |
SK (1) | SK278545B6 (en) |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2705133B1 (en) * | 1993-05-10 | 1995-08-04 | Caillau Ets | QUICK CONNECTION. |
FR2707727B1 (en) * | 1993-07-02 | 1995-10-06 | Caillau Ets | Quick connection. |
FR2710717B1 (en) * | 1993-10-01 | 1995-12-22 | Caillau Ets | Quick connection for fitting a rigid tube into a nozzle. |
DE4404731C2 (en) * | 1994-02-16 | 2002-12-12 | Zf Sachs Ag | Cylinder with connector |
US5472242A (en) * | 1994-06-24 | 1995-12-05 | Petersen; Horst U. | End-fitting for pipe connection having proper insertion indicator |
DE19522690A1 (en) * | 1995-06-22 | 1997-01-02 | Henn Gmbh & Co Kg | Plug connection for the connection of pipe and hose lines |
US5730475A (en) | 1995-10-13 | 1998-03-24 | Form Rite | Quick connect fluid coupling with collet retainer |
DE19609925A1 (en) * | 1996-03-14 | 1997-09-18 | Fichtel & Sachs Ag | Detachable push-fit connection between pipe and cylinder |
GB9620011D0 (en) * | 1996-09-25 | 1996-11-13 | Bend All Mfg Inc | Snap-in end fitting for pipes |
NL1004679C1 (en) * | 1996-12-03 | 1998-06-05 | Applied Power Inc | Fluid plug-in connection. |
DE20111280U1 (en) * | 2001-07-06 | 2002-05-16 | Henn Ges M B H & Co Kg Dornbir | Plug with hose holder for a plug connection |
FR2855590B1 (en) * | 2003-05-27 | 2006-10-20 | Caillau Ets | QUICK CONNECTOR TIP |
DE10346712B4 (en) * | 2003-10-08 | 2006-02-02 | Henn Gmbh & Co. Kg | Plug connection for pipe and hose lines with detent spring guide |
DE10347929A1 (en) * | 2003-10-15 | 2005-05-19 | Henn Gmbh & Co. Kg | Connector for pipes and hoses has at least in region of locking spring openings a double walled construction, whereby double walls are squashed together at least in this region but spaced apart outside of it |
DE10347926A1 (en) * | 2003-10-15 | 2005-05-19 | Henn Gmbh & Co. Kg | Plug connection for connecting pipes and hoses with circlip |
DE102004019799A1 (en) * | 2004-04-23 | 2005-11-17 | Henn Gmbh & Co. Kg | Method for producing a plug connection and plug connection |
US20060145475A1 (en) * | 2004-12-30 | 2006-07-06 | Itt Manufacturing Enterprises, Inc. | Fluid quick connector with wire retainer |
DE102005009688B3 (en) * | 2005-03-03 | 2006-03-09 | Henn Gmbh & Co. Kg | Plug and socket connection, has form sealing washer designed as lip seal, which is arranged in circulating slot of connector, where slot has imprecise molding with small slot depth and does not posses specific standard to slot geometry |
US20080191481A1 (en) * | 2005-04-13 | 2008-08-14 | Henn Gmbh & Co. Kg | Method for Production of a Plug Connection and a Plug Connection |
DE102006011617A1 (en) * | 2006-03-14 | 2007-09-20 | Norma Germany Gmbh | Connecting arrangement for connecting a pipe socket with a hose |
DE102006047882B3 (en) * | 2006-10-10 | 2007-08-02 | Rasmussen Gmbh | Pluggable connection arrangement for hose and pipe or tube, uses leaf-spring ring for latching into annular groove |
DE102006054246A1 (en) * | 2006-11-17 | 2008-05-21 | GM Global Technology Operations, Inc., Detroit | Connecting piece-tube-coupling for connecting connecting piece with tube, has tube stuck in tube clamping section between connecting piece and outer fixing element, and expansion collar including free end with increased tube diameter |
US7530604B2 (en) * | 2007-05-15 | 2009-05-12 | Ti Group Automotive Systems, Llc | Non-serviceable fluid coupling |
DE102007031614A1 (en) * | 2007-07-06 | 2009-01-08 | Daimler Ag | Charge air hose |
AT505768B1 (en) * | 2008-01-28 | 2009-04-15 | Henn Gmbh & Co Kg | CONNECTOR FOR CONNECTING CONDUCTORS TO FLUID OR GASIFIED MEDIA |
DE102009007019A1 (en) * | 2009-01-31 | 2010-08-12 | Norma Germany Gmbh | Fuel line and method of making a fuel line |
CN102434740B (en) * | 2011-09-19 | 2013-05-08 | 中捷厨卫股份有限公司 | Quick connector and pipe connecting method |
AT516939B1 (en) * | 2015-10-07 | 2016-10-15 | Henn Gmbh & Co Kg | Connector for connecting lines for liquid or gaseous media |
DE102016013752A1 (en) * | 2016-11-18 | 2018-05-24 | Mann + Hummel Gmbh | Coupling device for media-carrying lines |
EP3854618B1 (en) * | 2020-01-21 | 2022-03-09 | Magna Energy Storage Systems GesmbH | Fuel tank comprising a connector |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0410842A1 (en) * | 1989-07-28 | 1991-01-30 | Etablissements CAILLAU | Quick-acting coupling |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
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US3453005A (en) * | 1968-04-08 | 1969-07-01 | Scovill Manufacturing Co | Quick-connect safety coupling |
DE2948560C2 (en) * | 1979-12-03 | 1982-06-24 | Bell-Hermetic-Armaturenwerk GmbH & Co KG, 3509 Spangenberg | Pluggable quick coupling for pipe or hose lines |
SE459279B (en) * | 1984-06-21 | 1989-06-19 | Volvo Ab | CLUTCH DEVICE ON PRESSURE MEDIUM CABLES |
US4640534A (en) * | 1986-03-14 | 1987-02-03 | John T. Hoskins | Fluid coupling assembly |
DE3815171A1 (en) * | 1988-05-04 | 1989-11-09 | Rasmussen Gmbh | PLUG-IN COUPLING TO CONNECT A HOSE TO A PIPE |
DE3815173A1 (en) * | 1988-05-04 | 1989-11-09 | Rasmussen Gmbh | PLUG-IN COUPLING TO CONNECT A HOSE TO A PIPE |
CH680382A5 (en) * | 1989-08-24 | 1992-08-14 | Bucher Guyer Ag Masch | |
DE69100022T2 (en) * | 1990-02-02 | 1993-07-15 | Caillau Ets | DEVICE FOR CONNECTING A HOSE TO THE END OF A RIGID TUBE. |
-
1992
- 1992-04-16 ES ES92401072T patent/ES2071450T3/en not_active Expired - Lifetime
- 1992-04-16 AT AT92401072T patent/ATE119981T1/en not_active IP Right Cessation
- 1992-04-16 DK DK92401072.1T patent/DK0511891T3/en active
- 1992-04-16 EP EP92401072A patent/EP0511891B1/en not_active Expired - Lifetime
- 1992-04-16 DE DE69201673T patent/DE69201673T2/en not_active Expired - Fee Related
- 1992-04-21 US US07/871,650 patent/US5273323A/en not_active Expired - Lifetime
- 1992-04-28 HU HU9201410A patent/HU211103B/en not_active IP Right Cessation
- 1992-04-28 JP JP4109593A patent/JP2685386B2/en not_active Expired - Fee Related
- 1992-04-29 PL PL92294382A patent/PL167172B1/en unknown
- 1992-04-29 SK SK1308-92A patent/SK278545B6/en unknown
- 1992-04-29 CZ CS921308A patent/CZ280943B6/en not_active IP Right Cessation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0410842A1 (en) * | 1989-07-28 | 1991-01-30 | Etablissements CAILLAU | Quick-acting coupling |
Also Published As
Publication number | Publication date |
---|---|
DE69201673T2 (en) | 1995-10-26 |
PL167172B1 (en) | 1995-08-31 |
EP0511891A1 (en) | 1992-11-04 |
CZ280943B6 (en) | 1996-05-15 |
JPH05133492A (en) | 1993-05-28 |
SK278545B6 (en) | 1997-09-10 |
ATE119981T1 (en) | 1995-04-15 |
CS130892A3 (en) | 1992-11-18 |
US5273323A (en) | 1993-12-28 |
HUT61088A (en) | 1992-11-30 |
JP2685386B2 (en) | 1997-12-03 |
DE69201673D1 (en) | 1995-04-20 |
DK0511891T3 (en) | 1995-07-24 |
ES2071450T3 (en) | 1995-06-16 |
HU211103B (en) | 1995-10-30 |
HU9201410D0 (en) | 1992-07-28 |
PL294382A1 (en) | 1992-11-02 |
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